DE2135643A1 - Spiral spring - of fibreglass reinforced plastic using resin impregnated spun rovings - Google Patents

Spiral spring - of fibreglass reinforced plastic using resin impregnated spun rovings

Info

Publication number
DE2135643A1
DE2135643A1 DE2135643A DE2135643A DE2135643A1 DE 2135643 A1 DE2135643 A1 DE 2135643A1 DE 2135643 A DE2135643 A DE 2135643A DE 2135643 A DE2135643 A DE 2135643A DE 2135643 A1 DE2135643 A1 DE 2135643A1
Authority
DE
Germany
Prior art keywords
rovings
reinforced plastic
resin impregnated
drawn
mandrel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DE2135643A
Other languages
German (de)
Inventor
Karl Vom Bruck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DE2135643A priority Critical patent/DE2135643A1/en
Publication of DE2135643A1 publication Critical patent/DE2135643A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

The push-and-pull stable helical springs are made of glass fibre reinforced plastic according to parent patent, in which stretched glass fibre strands are used around whose longitudinal axes are arranged spun fibres forming a multitude of loops (spun rovings). Pref. the resin impregnated rovings are drawn to form a tubular glass fabric which is wound around the mandrel and hardened. A thermoplastic tube can be drawn over the glass fabric tube prior to winding.

Description

Verfahren zur Herstellung von auf Zug und Druck belastbaren Schraubenfedern aus glasfaserverstärktem Kunststoff.Process for the production of coil springs that can withstand tension and compression made of glass fiber reinforced plastic.

Zusatz zu P . . ... (Patentanmeldung P 17 o4 792Z6) vom 24.Januar 1967 Die Hauptanmeldung betrifft ein Verfahren zur Herstellung von auf Zug und Druck belastbaren Schraubenfedern aus glasfaserverstärktem Kunststoff, wobei erfindungsgemäß mit Kunstharz imprägnierte Glasfaserstränge in schraubenförmig verlaufende Nuten auf dem Umfang eines Dornes unter Zugspannung gewickelt und durch Aushärten des Kunstharzes verfestigt werden. Addition to P. . ... (patent application P 17 o4 792Z6) from January 24th 1967 The main application relates to a process for the production of tension and compression resilient coil springs made of glass fiber reinforced plastic, according to the invention Fiberglass strands impregnated with synthetic resin in helical grooves wound on the circumference of a mandrel under tension and hardened by the Resin are solidified.

So hergestellte Schraubenfedern neigen bei hohen Belastungen zum Aufspleißen in den Ebenen der Glasfaserstränge, da die Bindung der Stränge untereinander nur durch das Bindemittel erfolgt, dessen Festigkeit wesentlich geringer ist als die Festigkeit der Glasfaser. Zur Verbesserung dieser Festigkeit werden in weiterer Ausbildung der obigen Erfindung als Glasseidenstränge Spinnrovings verwendet, d.h. gestreckte Glasseidenfäden, um deren Längsachse räumlich Spinnfäden unter zahlreichen Schlaufenbindungen angeordnet sind. Diese Schlaufen bilden Brücken zwischen den parallel angeordneten Glasseidenfäden und erhöhen somit die Scherfestigkeit.Helical springs manufactured in this way tend to fade under high loads in the levels of the fiberglass strands, since the strands are only bonded to one another takes place through the binder, the strength of which is much lower than that Strength of the fiberglass. To improve this strength, further Embodiment of the above invention as fiberglass strands used spun rovings, i. stretched fiberglass threads, around their longitudinal axis spatially spun threads among numerous Loop bindings are arranged. These loops form bridges between the parallel arranged fiberglass threads and thus increase the shear strength.

Man kann solche mit Bindemittel getränkten Spinnrovings in einen oder mehrere Glasseidenschläuche ziehen, wobei der Bindemittelüberschuß diese Glasseidenschläuche von innen her durchtränkt; man kann jedoch eine nochmalige Tränkung vorsehen; anschließend werden an den Enden der Rovingstränge Anschlußelemente befestigt und die Stränge in die Nuten der Form eingelegt.You can put such a spinning roving soaked in a binder into an or Pull several glass silk tubes, with the excess binder these glass silk tubes soaked from within; you can, however, provide for a repeated impregnation; afterward connecting elements are attached to the ends of the roving strands and the strands inserted into the grooves of the mold.

Zur Erzielung einer glatten Oberfläche kann man ferner die imprägnierten Spinnrovings in einen Schlauch aus thermoplastischem gegebenenfalls aus elastischem Kunststoff ziehen und dann auf den Dorn wickeln und aushärten. Der Folienschlauch kann auf der Feder bleiben nder abgezogen werden, jedenfalls erhalt man Teile mit hoher Oberflächengüte.To achieve a smooth surface, you can also use the impregnated Spinning rovings in a tube made of thermoplastic, if necessary of elastic Pull plastic and then wrap it on the mandrel and cure. The film tube can remain on the spring and can be removed, in any case you get parts with it high surface quality.

Vor dem Einziehen in den Folienschlauch kann man die imprägnierten Spinnrovings selbstverständlich auch in Gewebeschläuche ziehen.Before being drawn into the film tube, the impregnated Of course, you can also pull spinning rovings into fabric tubes.

2 Seiten Beschreibung 3 Patentansprüche2 pages description 3 claims

Claims (3)

P a t e n t a n s p r ü c h e 1. Verfahren zur Herstellung von auf Zug und Druck belastbaren Schraubenfedern aus glasfaserverstärktem Kunststoff nach Patent . ... ... (Zusatz zu P 17 04 792.6), gekennzeichnet durch die Verwendung von gestreckten Glasseidensträngen, um deren Längsachse räumlich Spinnfäden unter zahlreichen Schlingenbildungen angeordnet sind (Spinnrovings). P a t e n t a n s p r ü c h e 1. Process for the production of on Tension and compression resilient coil springs made of glass fiber reinforced plastic Patent. ... ... (addition to P 17 04 792.6), marked by the use of stretched fiberglass strands with spun threads spatially underneath them around their longitudinal axis numerous loop formations are arranged (spinning rovings). 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die mit Kunstharz imprägnierten Rovings, insbesondere Spinnrovings, in zumindest einen Glasgewebeschlauch gezogen und dann auf den Dorn aufgewickelt und gehärtet werden.2. The method according to claim 1, characterized in that the with Synthetic resin-impregnated rovings, in particular spinning rovings, in at least one glass fabric tube drawn and then wound onto the mandrel and hardened. 3. Verfahren nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die mit Kunstharz imprägnierten Rovings, insbesondere Spinnrovings, in die Glasgewebeschläuche und dann in einen Folienschlauch aus vorzugsweise thermoplastischem Material gezogen, auf den Dorn aufgewickelt und gehärtet werden.3. The method according to claim 1 and 2, characterized in that the rovings impregnated with synthetic resin, in particular spinning rovings, into the glass fabric tubes and then drawn into a film tube made of preferably thermoplastic material, wound on the mandrel and hardened.
DE2135643A 1971-07-16 1971-07-16 Spiral spring - of fibreglass reinforced plastic using resin impregnated spun rovings Pending DE2135643A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2135643A DE2135643A1 (en) 1971-07-16 1971-07-16 Spiral spring - of fibreglass reinforced plastic using resin impregnated spun rovings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2135643A DE2135643A1 (en) 1971-07-16 1971-07-16 Spiral spring - of fibreglass reinforced plastic using resin impregnated spun rovings

Publications (1)

Publication Number Publication Date
DE2135643A1 true DE2135643A1 (en) 1973-02-01

Family

ID=5813927

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2135643A Pending DE2135643A1 (en) 1971-07-16 1971-07-16 Spiral spring - of fibreglass reinforced plastic using resin impregnated spun rovings

Country Status (1)

Country Link
DE (1) DE2135643A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3670156A1 (en) 2018-12-19 2020-06-24 BASF Polyurethanes GmbH Method for producing a hardened element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3670156A1 (en) 2018-12-19 2020-06-24 BASF Polyurethanes GmbH Method for producing a hardened element

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